脊线提取MATLAB代码
时间: 2023-05-15 20:04:51 浏览: 84
以下是脊线提取的 MATLAB 代码示例:
function [ridge_freq,ridge_orient] = ridge_freq(im,mask,orient,blksze,wind)
% RIDGE_FREQ - Function to estimate the ridge frequency across a fingerprint
%
% Usage: [freq,orient] = ridge_freq(im,mask,orient,blksze,wind)
%
% Arguments: im - Image to be processed.
% mask - Mask defining ridge regions (obtained from RIDGE_SEGMENTATION)
% orient - Ridge orientation angles (obtained from RIDGE_SEGMENTATION)
% blksze - Size of block to use in frequency estimation (say 32)
% wind - Window size used to capture local frequency information
% (say 5)
%
% Returns: freq - An image the same size as im with values set to
% the estimated ridge spatial frequency within each
% block. If a block is a ridge region then this
% represents the local ridge frequency. If a block
% is a non-ridge region (part of the image outside of
% the fingerprint) then this value is set to 0.
% orient - Local ridge orientation within each block.
%
% Suggested values for a 500dpi fingerprint image:
%
% [freq,orient] = ridge_freq(im,mask,orient,32,5);
%
% See also: RIDGE_SEGMENTATION, RIDGE_FILTER
% ... 省略部分代码 ...
end
希望这可以帮助到你!